Plumb and level.



H. H. LUNG.

PLUMB AND LEVEL.

111111101111011 FILED 1111.29, 1912.

Patented Dec. 23, 1913.

\ 22? EEMGA R o Tl N E v N S E S S E N .lll W ATTORNEYS @NITEB STATES PATENT OFFICE.

HENRY H. LUNG, OF PHILADELPHIA, PENNSYLVANIA.

PLUMB AND LEVEL.

Application filed January 29, 1912.

To ad 'whom i may concern Be it known that I, HENRY H. LUNG, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Plumb and Level, of which the following is a specification.

My invention relates to an improvement in plumbs and levels and consists in forming the .stock thereof of sections and providing means for looking them continuously of each other as one.

It consists further of novel means for adjusting and securing the spirit bottle or tube in the stock` lt consists further of protecting the bottle or tube from the effect of falls or blows that may result to the device.

It consists further of means for causing the bubble in the bottle or tube to be seen most distinctly.

lt consists further of means for rendering the circumferential scribes on the bottle or tube by which the bubble is centered to be rendered more discernible.

It consists finally of details of construction as will be hereinafter set forth and delinitely claimed.

The invention is satisfactorily illust-rated in the accompanying drawing, but the important inst-rumentalities thereof may be varied, and so it is to be understood that the invention is not limited to the specific arrangement and organization shown and described.

Figure l represents a side elevation of a plumb and level embodying my invention. Fig. 2 represents a vertical section on an enlargedscale on line -m Fig. l. Fig. Brepresents a side view of the central portion of the device on a further enlarged scale, certain members thereof having been removed. Fig. 4t represents a longitudinal section of said portion. Fig. 5 represents a transverse section on line g/--g/ Fig. 4. Fig. 6 represents a partial side elevation and a partial longitudinal section of an end portion of the device on an enlarged scale. Fig. 7 represents a perspective view of a detached portion of the device.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings :-A designates the stock of the device, the same being composed of sections B, C, D, which are provided respectively at their ends Specification of Letters Patent.

Patented Dec. 23, 1913.

Serial No. 673,996.

with tongues E and grooves F forming dovetailed joints, the tongues of the respective sections entering the grooves of the adjacent sections, thus locking the sections as one and forming the stock of a continuous length comparatively intact, said sections, however, being adapted to be separated at their joints, and placed in small compass convenientfor carrying, packing, storage, transportation, etc.

The walls of the members comprising the dovetailed joints are covered with facings Gr of metal or other suitable material secured thereto in any suitable manner, thus protecting said members from blows, and reinforcing or strengthening the same, thus add ing to their durability and preventing any material injury to said members in assembling and disjointing the sections.

In the center of the stock is the recess H which is open on opposite sides of the same so as to expose the spirit containing bottles or tubes J which are located and secured therein, said bottles or tubes having each a bubble therein as usual in plumbs and levels, it being noticed that there are two such bottles or tubes, they being arranged parallel in said recess, the latter being separated or divided by tongues K which are inturned from the adjacent portions of the stock.

The top of one recess is formed by the wall L and the bottom of the other recess is formed by the wall M, it being noticed that said walls extend in the longitudinal direction of the stock, and are continuous with the adjacent portions of the same it being noticed also that each tube is fitted in its recess between one of the walls L or M and the opposite sides of the tongues K, it being noticed that the end portions of the recesses are of dove-tailed form.

The tubes J are inclosed by outer tubes N whose ends are secured thereto by the caps P of plaster or cement, such as plaster of Paris, which is poured in plastic condition between the tubes. Cushions Q of resilient material are placed against the ends of the inner tubes and inclosed by said plaster. Packing rings R are interposed between the outer and inner tubes so as to encircle the inner tubes. By these means the tubes are not likely to be broken by end or side thrusts due to the falling of the device or blows imparted to the same when in use.

The plaster employed as above, when set, interlocks with the adjacent wallsof the stock about the recess H owing to the dovetailed nature of said walls and so the plaster cannot escape from the stock either at theI Wedges S whichare driven into the spaces.

between the outer `tubes .N and the tongues K and transversely extending wedges T which are driven into the spaces between saidtubes andthe walls L, M, said wedges tightening-against the tubes, firmly seating them and serving also primarily to adjust said tubes to be truly horizontal in the stock by the extentito which the wedges are driven in to position.

Inter-posed betweenthe l,inner and outer tubes are the sheets or plates U of paper or other material which encircle portions of the inner tubes in the longitudinal section thereof opposite to the llocations of thebubbles when the device is in use. This forms acontrast with the glare or shine of said tubes and .comparatively removes the same from the tubesin viewing said bubbles and so the latter are more perceptible in viewing. In order to hold said sheets or plates in position, I employ the threads V which are wound arcund the same andalso around the tubes .l and knotted or otherwise secured, see Fig. 7, said threads also occupying the usualscribes V in said tubes J so as to be prevented from shifting and serving alsoiby their contrasting color to malte the centering of .the bubbles inV the tubes between said scribes .more apparent tothe observer'and so more easily-read-off'bythe latter. Tubes.

Copies of-this patent maybe. obtainedfor ve cents each, by addressing the Commissioner of Patents,

Washington, DJG.

orbot-tles W are inserted in openings in the' ends of the stock and retained in place by vthe plaster X and plugs Y.

It will be noticed that the tubes are dupli cated at the center and the ends of the stock, so that either side or end of the latter may be used for the level or plumb and the stock Ihas a scribe Z centrally in the length thereof for the use of the plumb line.

Having thus described my invention what Iclaim vasnew and desire to secure by Letters I)ate1i-t,l.is: Y

1. Inla plumb and level, a stock, a vspirit tube therein, -.a scrobe onsaid tube, a piece vof contrasting material partially around said tube in the longitudinal directionthereoi:l opposite the :bubble when in use and threads encircling lsaid piece and tube to vretain the piece in position, said scribe being disposed to centerthebubble and having said threads seated therein.

tube, said Wedges controlling said outer tube 'inuts adjustment.

8. In a plumb and level, a stock having a yrecess therein, a spirittube inthe same, said recess being of dove-tailed form, vplaster vfilling said recess and-inclosing the ends of said tube, an outertube inclosing said spirit tube, yand wedges interposed between the ends of the outer tube and the adjacent `plaster and extending lengthwise of the tube to21,ljusttlie latter in the recess.

vHENRY H. LUNG. yVitnesses .JOHN A. lVinDnnsHnrM,

N. .BvsslNGrR. 

